refactor(sidebar): name the label map for what it is keyed by

The map moved from worktree id to host-qualified identity in the previous
commit; the parameter name still said 'ByWorktreeId', which is exactly the
collapse this change exists to prevent.

src/renderer/src/components/sidebar/worktree-list/grouping/build-rows.ts

@@ -131,7 +131,7 @@ export function buildRows(
           collapsedGroups,
           groupDepth: 0,
           sectionKey: ALL_GROUP_KEY,
-          hostContextLabelByWorktreeId: mixedWorktreeHostContextLabels,
+          hostContextLabelByWorktreeIdentity: mixedWorktreeHostContextLabels,
           cyclicLineageIds
         })
       }

src/renderer/src/components/sidebar/worktree-list/grouping/group-sections.ts

@@ -160,7 +160,7 @@ export function appendOrderedGroups(
       // be registered on two hosts — then every row in the group shares a repo id
       // and the per-repo label cannot tell them apart. Fall back to the per-row
       // host labels, which are keyed by host-qualified identity.
-      const hostContextLabelByWorktreeId =
+      const hostContextLabelByWorktreeIdentity =
         groupBy === 'repo' && hostContextLabelByRepoId ? undefined : mixedWorktreeHostContextLabels
       appendWorktreeRows(result, items, repoMap, lineageById, worktreeMap, {
         nestLineage,
@@ -168,7 +168,7 @@ export function appendOrderedGroups(
         groupDepth: projectGroupDepth,
         sectionKey: key,
         hostContextLabelByRepoId,
-        hostContextLabelByWorktreeId,
+        hostContextLabelByWorktreeIdentity,
         cyclicLineageIds
       })
     }

src/renderer/src/components/sidebar/worktree-list/grouping/row-builders.ts

@@ -174,7 +174,7 @@ export function appendWorktreeRows(
     groupDepth: number
     sectionKey: string
     hostContextLabelByRepoId?: ReadonlyMap<string, string>
-    hostContextLabelByWorktreeId?: ReadonlyMap<string, string>
+    hostContextLabelByWorktreeIdentity?: ReadonlyMap<string, string>
     cyclicLineageIds: ReadonlySet<string>
   }
 ): void {
@@ -184,7 +184,7 @@ export function appendWorktreeRows(
     groupDepth,
     sectionKey,
     hostContextLabelByRepoId,
-    hostContextLabelByWorktreeId,
+    hostContextLabelByWorktreeIdentity,
     cyclicLineageIds
   } = options
   if (!nestLineage) {
@@ -200,7 +200,7 @@ export function appendWorktreeRows(
           lineageChildCount: 0,
           lineageCollapsed: false,
           hostContextLabel:
-            hostContextLabelByWorktreeId?.get(getWorktreeHostIdentity(worktree)) ??
+            hostContextLabelByWorktreeIdentity?.get(getWorktreeHostIdentity(worktree)) ??
             hostContextLabelByRepoId?.get(worktree.repoId)
         })
       )
@@ -250,7 +250,7 @@ export function appendWorktreeRows(
         lineageChildCount: children.length,
         lineageCollapsed,
         hostContextLabel:
-          hostContextLabelByWorktreeId?.get(getWorktreeHostIdentity(worktree)) ??
+          hostContextLabelByWorktreeIdentity?.get(getWorktreeHostIdentity(worktree)) ??
           hostContextLabelByRepoId?.get(worktree.repoId)
       })
     )